Suction box oscillating means



Oct. 4, 1932. 1 w VEDDER 1,881,105

SUCTION BOX OSCILLATING MEANS Filed March 16, 1951 4 Sheets-Shet l [\4 E Q m: M

7557: WeSrr-en'TFJe fl amw Oct. 4, 1932. J w VEDDER 1,881,105

SUCTION BOX OSCILLATING MEANS Filed March 16, 1931 4 Sheets-Sheet 2 M733; 0:3" -Warren Va We 1932- J. w. VEDDER SUCTION BOX OSCILLATING MEANS Filed March 16, 1931 4 Sheets-Sheet 3 .ECD.

(755m Wa r-ren V90 1932- J. w. VEDDER SUCTION BOX OSCILLATING' MEANS Filed March 16, 1931 4 Sheets-Sheet 4 Patented Oct. 4, 1932 JOHN WARREN vnnnnn; or woncnsr'nnivmssacnusnrrs.

I 'sn'orron 130x OSCILLA'IING MEANS Application filed March 16, 1931. Serial No. 523,008.

" Th is invention relates toadevice for oscillatingsuction boxes on a"Fourdrinier paper ;machine.*- 1' The principal objects of the'invention are ii to providefsimple and direct means for oscillating" the suctionboxes so as to prevent the wearing of grooves in the suction box covers and injury tothe'wire; to provide a drive for the same so connected and arranged 19 that when the Fourdrinier wire. stops the os- "cillation of the suction boxes' will stop also, whereby the possible damage caused by the oscillation of the suction boxes when the wire *is not operatingwill be avoided, and to pro- :15 vide :an improved support for the. suction boxes to enablethem to be oscillated in one direction at one end and the other at the other ends" 7 I 1 Other objects and advantages of them- 20 vention. will appear hereinafter. 7

Reference is to be had tov the accompanying'drawings, in which i 1 a Fig. 1 is a side view of a section of the Fourdrinier part of a paper machine, showing a preferred embodiment of this invention;

Fig. 2 is a plan of the same; Fig. 3 is a sectional view of the suction .boxes, supporting means at one end and the means for operating it;

Fig. 4 is a sectional view on the line 4.4

of Fig. 3;

Fig. 5 is a sectional View like Fig. 3 showing the second eccentric and with the shaft in th same position as in Fig. 3; g

"Fig. 6' is a plan on reduced scale showing in dotted and full lines the extent and direc tion of the vibration;

Fig. 7 is a plan of a portion of the machine jaw showing another way of operating it, and

45 atively expensive mechanism to build and also to maintain. It has usually been constructed so that the suction box'moves as a whole one way or another. According to this invention the suction boxes are vibrated 0 by moving one'end in one directionand the other in theopposite direction at the same time.

The invention is shown as applied to an ordinary Fourdrinier machine in which the Fourdrinier wire 10 passes over a lower couch 5t roll 11 at one end and another roll at the other end for supporting the wire. The shaft 12; of the lower couch roll is positively driven. On this shaft is a pinion 13 which, by a chain 1 1, drives a gear 15 and other gearing drives a shaft 16 therefrom, extending transversely across the machine at the end.v

1 On the shaftlti are two eccentrics 17 and 18. These eccentrics are set oppositely as shown in Figs. 3 and 5 and are connected with blocks 19 which aremounted to slide vertically in a pair of frames 20 which are attached by means of brackets 21 to a pair of supports 22 which carry suction boxes 23 beneath them. The suction boxes are secured tothese supports by bolts 24, which are secured to the supports 22 and the suction boxes 23 to hold them rigidly at the two ends. The supports 22 are carried by springs 26 to allow these supports to move longitudinally and sideways. The eccentrics being set oppositely, it will be seen that the motion of the suction boxesindicated in Fig. 6 will take place. One end will move forward while the other end is moving back and they may move sideways slightly. 7 i

The parts arerigidly connected but on account of the fact that the 'maximum'motion is only: about 1 while the length of the suction boxesis approximately the width of the Fourdrinier wire; (that is, from 100? to 200), the springs 26 are capable of twisting a slight amount so that they accommodate any twist from the motionif necessary. I

' The result of, this is that the suction boxes are moved so that the wire will not wear grooves in their covers as is the case with stationary suction boxes. Another advantage ofthe construction described is that when the Fourdrinier wire stops the vibration of-the suction boxes also stops, thus preventing the suction boxes from moving after the wire 7 has come to rest withthe resultant damage possible. v c In the form shown in'Fig. 7 the shaft 16 a is operated directly by a'motor 27 through a reducer '28. In this case one advantage of the other construction is lost, becausethe suction boxes can operate when the Fourdrinier Wire is stopped and the attendant has to stop the mbtor-27 at the proper time. a

In the form shown in Fig. s-the silaft'sc c is provided with two pairs of cams 37, 38:

and 47 4:8; The two cams 37 and '38 areconr.

' nected with a pair of supports 32 whilethe two earns 47' and-48- are connected with'a f pairof supports 42. In each-case r each pair of supports carries alternate suction boxes i The result is thatshown in Fig. 8. The boxes r are shifted oppositely at adjacent ends, thus' causedto run ofi to one side.

v 33 and t3.- The cams37 and 88 are set oppo:

site each,othera-nd alsothe cams 37 and 4:7.

preventing any tendencyfof the wire being 7 Although Ihave illustrated and describedonly three forms of the invention I am aware ofthe fact that othermodifications can be made therein by any person skilled in theart without departing from the scope of the inbutwhat I do claim is 1+ vention' as expressed in the claims; Therefore, I do not wish tobe limited in thisrespect 1. In a paper machine, the 'comb-ination witha Fourdrinier wire, and means for oper atihgiit, of 'apair of supports-asset ofsuc tron boxes. rigidly carried by said supports and meansfor reciprocating said supports in opposite directions transverse to the length of the suction boxes at their ends. I 52; In a paper machine/the-combinationwith' a Fourdrinie'r wire, a setyof suction" boxes over which thewire passes, a pair of supports Vfor the suctionboxes located at opv posite ijends, means for rigidly securingthe suction boxes to the supports to depend therefrom,{a shaft at theend ofthe series'of sucly, a nd means for transmittinglthe motion of said eccentrics ahorizontaljplaneto said p j supports .to move themvtransverselyto the 'lengthjorthe suction boxes. I 3. In

suction boxes to which the boxes areri'gidly- V secured,ly1eld1ng means for carrying said supports to permit of motion','a shaft at the V end of'the series ofthe suction boxes extend- Ling transversely, a pair of eccentrics 'onsaid shafts, set opposite each other, blocks in which said eccentrics operate, frames having s vertical ways-for said blocks, and means for 3 connecting said frames individually with the supports to vibratesa'id suction boxes in op posit-edirectionsattheiroppositeends." c 4:. In a paper machine, the combination 5 with the suction boxes, ofmeans for angularlyshiftingthem so that eachtwo adjacent 7 '7 tudinally.

springs; In testimony I a paper. machine, the combination. ofa Fourdrinier wire,1a set of suction boxes 7 over"which'the wire passes, a pair of longi r tudinal supports onthe opposite endsof saidopposite directions at the same vibrating the two supports of each pair in opp'ositedirections.

6 Ina Eourdrinier' paper 'machine, the I combinatlon of a setof suctlon boxes over vwhich the Fourdrinier wire passes, springs for" supporting said boxes located near the four corners of the whole set of boxes, and

means for simultaneously vibrating'the two sides of the set of, longitudinally. I t I 7 In a paper machine, theicombination of theFourdrinier wire" and a setofsuction boxes thereunder, withgfour vertical flat par oxes in opposite'directions.

allel springs for yieldingly supportingathe boxes,"said springs being capable'oftwistng, and means-for vibrating the two sideslof the set of boxes in' dilferent directions longi- 8. In a paper the Fourdrinierwireand arset of suction boxes thereunder, withisprings ror yielding- 1y supporting the boxes, said springs being capable 'of twisting,fland means for moving I the setof boxes in such; a way as to twist the fixed my signature.

v norm WARR N vEnnEB tion boxes locatedflparalleltotheir length, a r pa r iOfIQCCGIltIICS on said'shaft, set'opposite whereojf areas as mach-ine,the combination of V 

